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121 lines (100 loc) · 3.29 KB
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/*
* Copyright 2011-2016 David Karnok
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ix;
import org.junit.Test;
public class ScanTest {
@Test
public void normal() {
Ix<Integer> source = Ix.range(1, 5).scan(new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source, 1, 3, 6, 10, 15);
IxTestHelper.assertNoRemove(source);
}
@Test
public void just() {
Ix<Integer> source = Ix.just(1).scan(new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source, 1);
IxTestHelper.assertNoRemove(source);
}
@Test
public void empty() {
Ix<Integer> source = Ix.<Integer>empty().scan(new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source);
IxTestHelper.assertNoRemove(source);
}
@Test
public void normalSeed() {
Ix<Integer> source = Ix.range(1, 5).scan(new IxSupplier<Integer>() {
@Override
public Integer get() {
return 100;
}
},new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source, 100, 101, 103, 106, 110, 115);
IxTestHelper.assertNoRemove(source);
}
@Test
public void justSeed() {
Ix<Integer> source = Ix.just(1).scan(new IxSupplier<Integer>() {
@Override
public Integer get() {
return 100;
}
}, new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source, 100, 101);
IxTestHelper.assertNoRemove(source);
}
@Test
public void emptySeed() {
Ix<Integer> source = Ix.<Integer>empty().scan(new IxSupplier<Integer>() {
@Override
public Integer get() {
return 100;
}
}, new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
IxTestHelper.assertValues(source, 100);
IxTestHelper.assertNoRemove(source);
}
}